Daikin FTXR-T Series Service Manual

Check SiUS041829E
122 Part 6 Service Diagnosis
5.13 Power Module Check
Check No.22 Check to make sure that the voltage between (+) and (–) of the power module is about 0 V before
checking.
 Disconnect the compressor harness connector from the outdoor unit PCB. To disengage the
connector, press the protrusion on the connector.
 Follow the procedure below to measure resistance between the terminals of the power module
and the terminals of the compressor with a multimeter. Evaluate the measurement results
referring to the following table.
09/12 class
Positive terminal (+) of
digital multimeter
Power module
(+)
UVW
Power module
(–)
UVW
Negative terminal (–) of
digital multimeter
UVW
Power module
(+)
UVW
Power module
(–)
Resistance is OK. several k ~ several M
Resistance is NG. 0  or 
Pin 24: +
Pin 23: U
Pin 22: V
Pin 21: W
Pin 20: –
(R20703)

Daikin FTXR-T Series Specifications

General

Brand	Daikin
Model	FTXR-T Series
Category	Heat Pump
Language	English